If you would like to return OptiKey to the state it is in when you first install it (all settings back to their original factory values), delete all of the directories that start with "OptiKey.exe_" in your roaming app data directory (C:\Users\YOUR_USER_NAME\AppData\Roaming\JuliusSweetland). For me (with a username of Julius) the steps would be;
如果你想将 OptiKey 恢复到安装它的初始状态（所有设置都重置为初始值），在当前用户的应用程序数据目录（C:\Users\YOUR_USER_NAME\AppData\Roaming\JuliusSweetland）下删除所有以 “OptiKey.exe_” 开头的目录。
以我的电脑（用户名是 Julius）为例，操作步骤如下：
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Close OptiKey if it is running.
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如果 OptiKey 正在运行，先将它关闭。
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Navigate to C:\Users\Julius\AppData\Roaming\JuliusSweetland (don't worry if you don't see the "AppData" directory, it is hidden by default. Just type the path into the navigation bar at the top of File Explorer).
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前往 C:\Users\Julius\AppData\Roaming\JuliusSweetland 目录（如果你看不到 “AppData” 目录，不要担心。它默认是被隐藏的。只需要在文件浏览器顶部的导航栏输入这个路径）。
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You will see one directory in there called "OptiKey" - leave that. It contains your log files and customised dictionary(ies).
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你将会在那里看到名为 “OptiKey” 的目录，里面包含了日志文件和自定义的字典。
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Delete the other directories. For me that means deleting "OptiKey.exe_Url_2dm1ifc0wqzcnmfgnsyhbssrcdx5zgbz", but your folder names will vary.
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删除其他的目录。在我的电脑中，就是删除 “OptiKey.exe_Url_2dm1ifc0wqzcnmfgnsyhbssrcdx5zgbz"，你的文件夹名字可能会有所不同。
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Start OptiKey again.
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重新启动 OptiKey。